Question 1055274: Two airplanes leave Dallas, Texas travelling in opposite directions, one is travelling 28mph faster than the other airplane. how fast is the faster airplane travelling if the two airplanes are 2,320 miles apart after 2 hours and 30 minutes?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Two airplanes leave Dallas, Texas travelling in opposite directions, one is travelling 28mph faster than the other airplane. how fast is the faster airplane travelling if the two airplanes are 2,320 miles apart after 2 hours and 30 minutes?
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Slower plane DATA:
rate = x-28 mph ; time = 2.5 hrs ; distance = 2.5(x-28) = 2.5x - 70 miles
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Faster plane DATA:
rate= x mph ; time = 2.5 hrs ; distance = 2.5x miles
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Equation:
dist + dist = 2320
2.5x + 2.5x- 70 = 2320
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5x = 2390
x = 478 mph (faster plane rate)
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Cheers,
Stan H.
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